<template>
    <div class="app-container">
        <el-form label-width="120px">
            <el-form-item label="信息描述">
                <el-tag type="info">excel模版说明</el-tag>
                <el-tag>
                    <i class="el-icon-download"/>
                    <a :href="'/static/01.xlsx'">点击下载模版</a>
                </el-tag>
            </el-form-item>
            <el-form-item label="选择Excel">
                <el-upload
                    ref="upload"
                    :auto-upload="false"
                    :on-success="fileUploadSuccess"
                    :on-error="fileUploadError"
                    :disabled="importBtnDisabled"
                    :limit="1"
                    :action="BASE_API+'/eduservice/subject/addSubject'"
                    name="file"
                    accept="application/vnd.ms-excel">
                    <el-button slot="trigger" size="small" type="primary">选取文件</el-button>

                    <el-button
                        :loading="loading"
                        style="margin-left: 10px;"
                        size="small"
                        type="success" @click="submitUpload">{{ fileUploadBtnText }}
                    </el-button>
                </el-upload>
            </el-form-item>
        </el-form>
    </div>
</template>
<script>
//import { defineComponent } from '@vue/composition-api'

export default {
    data() {
        return{
            BASE_API: process.env.VUE_APP_BASE_API, // 接口API地址
            //OSS_PATH: process.env.OSS_PATH, // 阿里云OSS地址
            fileUploadBtnText: '上传到服务器', // 按钮文字
            importBtnDisabled: false, // 按钮是否禁用,
            loading: false
        }
    },
    create(){

    },
    methods:{
        //上传到服务器方法
        submitUpload(){
            this.importBtnDisabled = true
            this.loading = true
            //js:document.getElementById("upload").submit()
            this.$refs.upload.submit()
        },
        //上傳成功方法
        fileUploadSuccess(){
            this.loading = false
            this.$message({
            type: 'success',
            message: '添加成功'
            })
            //跳轉到課程分類列表
            //router 跳轉
            this.$router.push({path:'/subject/list'})
        },
        //上傳失敗方法
        fileUploadError(){
            this.loading = false
            this.$message({
            type: 'error',
            message: '添加失敗'
            })
        }
    }
}
</script>
